Washing machine



Oct. 28-, 1930. Q GROTBERG 1,779,700

WASHING MACHINE Filed Jan. 12, 1928 1 .VI-"EN TOR.

f E E. C Grofgy Patented Oct. 28, 1930 UNITED STATES EDWARD O.GROTBERG', OF DENVER, COLORADO .WASHING MACHINE Application filedJanuary 12, 1928. Serial No. 248,278.

My invention relates to washing machines, and more particularly to thosewashing machines having means to rinse and dry clothes by centrifugalforce.

Heretofore after washing clothes in a washing machine of the typedescribed, water used to rinse the clothes has been allowed to mix withthe hot suds in the tub. This mixing not only dilutes the suds but alsocools them to such an extent that the suds must be drained out and freshhot water and suds put in the machine to wash the next batch of clothes.

An important object of the present invention is to provide in a washingmachine means to prevent rinse water from mixing with the hot suds inthe operation of the machine.

Another object is to provide means whereby the rinse water and the sudsmay be drained from the machine, separately or simultaneously.

A further object is to provide means for forcibly drawing the rinsewater or the suds from the machine.

.Still further objects reside in details of construction and in novelarrangements of parts, as will appear more fully in the followingdescription.

An embodiment of the invention has been illustrated in the accompanyingdrawings, in the several views of which like parts are similarlydesignated and in which,

Figure 1 represents a partially sectional elevation of a washing machineto which the improvements are applied; V

Figure 2, a section taken along the line 2-2 of Figure l; and

Figure 3, an enlarged sectional view of the drainage means of themachine.

Referring more specifically to the drawings the reference numeral 5represents the cylindrical tank of. the washing machine, and the numeral6, the legs supporting the tank. On the inner circumference of the tankis a trough 7 having an enlargement 8 for an outlet 9. The oppositesideof the trough slants inwardly as at 10 to provide suflicientclearance for a clothes basket 12 in thetank, hereinafter to bedescribed. The trough is slightly tilted out of a horizontal planetoward the outlet.

The clothes basket 12' has small perforations 13 for the escape andentrance of liquid. The basket is mounted on a shaft 14 central of thetank. A motor 15 is mounted on the under side of the bottom of the tankand is connected to rotate the shaft 14. The details of this connectionare not a part of the present invention, so have not been shown no indetail in the drawings. Any ordinary driving connection will besuitable.

A short drain pipe 16 connects with the outlet 9 of the trough. Looselyfitting around this drain pipe is a hollow valve stem 17 that normallyconnects the pipe with an outlet 18 in the bottom of the tank. Theoutlet 18 provides a valve seat for a valve 19 at the end of the hollowstem 17. The valve 19 may be of resilient material to secure a close fitin its seat.

The stem 17 has a circumferential groove 20 for its connection with afork 22 at the lower end of a control rod 21 which at its other end hasa handle 23. The rod 21 passes through a recess 24 in the trough so thatit may; be easily accessible from the top of the tan An air tube 25connects the space above the trough with the interior of the hollowvalve stem 17 to prevent a vacuum in the valve stem and to expeditedrainage through the stem.

A pump 26 is mounted on the under side of the tank bottom and is drivenby the motor 15 by means of a belt 27. The pump is connected with thetank outlet 18 by a drain pipe 28, and it has a discharge pipe 29.

In the operation of the washing machine, to which the invention isapplied, after the clothes have been washed, the basket is rotated towring the clothes therein by centrifugal force. During the rotation,rinse water is supplied to the tank thru a hose 30 held above the same.The wash water and rinse water, which pass thru the clothes bycentrifugal force, are discharged from the basket thru the perforationsin the outer wall thereof. The discharged water falls into the troughand is constantly drawn off by the pump 26. The air supplied thru thetube 25 provides for a constant equable flow of water 'thru thedischarge tube.

part of the tank. Thus'the suds may be used,

for washing subsequent batches of clothes, and each batch may be rinsedand dried without affecting the suds.

What I claim as my invention and desire to secure by Letters Patentis 1. A washing machine comprising a tank,

a rotating perforated basket in the tank, a

trough to catch liquid driven through perforations in the basket bycentrifugal force, the

trough and the tank having outlets, and a drain pipe for the troughoutlet carrying a valve adapted to control the flow through thetank-outlet.

2. A washing machine comprising a tank having a space for suds, arotating perforated basket in the tank, a trough above said space tocatch liquid driven through perforations in the basket by' centrifugalforce, the

trough and the tank having outlets, and a valve for the tank outlethaving a hollow stem connecting the trough outlet with the exterior ofthe tank.

3. A washing machine comprising a tank, a rotating perforated basket inthe tank, a trough to catch liquid driven through perforations in thebasket by centrifugal force, the trough having an outlet, a conduitconnecting the outlet with the exterior of the tank, and an open-endedair tube in said conduit, connecting the space above the trough with'theinterior of the conduit to Expedite the flow of liquid through theconuit.

4. A washing machine comprising a tank having an outlet, a rotatingperforated basket in the tank, a trough to catch liquid driven throughperforations of the basket by centrifugal force, the trough having anoutlet, a drain pipe connected with the trough outlet, a hollow valvestem telescoping with the drain pipe, a valve on the stem to close thetank outlet, the valve stem being movable on the drain pipe to removethe valve from the tank outlet, and means to eifect said movement of thevalve stem.

5. A washing machine comprising a tank,

. nected in said with the exterior of the tank, the stem having acircumferential groove, and a rod congroove to remove the valve from theoutlet.

In testimony whereof I have aflixed my signature.

' EDWARD C. GROTBERG.

